wip: migrate to bun

test/isRegExp.spec.ts

@@ -0,0 +1,38 @@
+import assert from 'node:assert';
+import lodashStable from 'lodash';
+import { falsey, stubFalse, args, slice, symbol, realm } from './utils';
+import isRegExp from '../src/isRegExp';
+
+describe('isRegExp', () => {
+    it('should return `true` for regexes', () => {
+        assert.strictEqual(isRegExp(/x/), true);
+        assert.strictEqual(isRegExp(RegExp('x')), true);
+    });
+
+    it('should return `false` for non-regexes', () => {
+        const expected = lodashStable.map(falsey, stubFalse);
+
+        const actual = lodashStable.map(falsey, (value, index) =>
+            index ? isRegExp(value) : isRegExp(),
+        );
+
+        assert.deepStrictEqual(actual, expected);
+
+        assert.strictEqual(isRegExp(args), false);
+        assert.strictEqual(isRegExp([1, 2, 3]), false);
+        assert.strictEqual(isRegExp(true), false);
+        assert.strictEqual(isRegExp(new Date()), false);
+        assert.strictEqual(isRegExp(new Error()), false);
+        assert.strictEqual(isRegExp(slice), false);
+        assert.strictEqual(isRegExp({ a: 1 }), false);
+        assert.strictEqual(isRegExp(1), false);
+        assert.strictEqual(isRegExp('a'), false);
+        assert.strictEqual(isRegExp(symbol), false);
+    });
+
+    it('should work with regexes from another realm', () => {
+        if (realm.regexp) {
+            assert.strictEqual(isRegExp(realm.regexp), true);
+        }
+    });
+});